The zeta-zeta correlator is time dependent

Kahya E. O., Önemli V. K., Woodard R. P.

PHYSICS LETTERS B, vol.694, no.2, pp.101-107, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 694 Issue: 2
  • Publication Date: 2010
  • Doi Number: 10.1016/j.physletb.2010.09.050
  • Journal Name: PHYSICS LETTERS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.101-107
  • Keywords: Inflation, Cosmology, Quantum gravity, Quantum loop effects, Infrared logarithms, CANONICAL VARIABLES, RADIATION, ENERGY, CRITERIA
  • Istanbul Technical University Affiliated: Yes


We comment on the recent arguments by Senatore and Zaldarriaga that loop corrections to the zeta-zeta correlator cannot grow with time after first horizon crossing We first emphasize the need to search for such secular dependence in corrections whose in-out matrix elements are infrared singular on an infinite spatial manifold Then we give examples of such time dependence from pure quantum gravity and from scalar potential models Finally we point out that this time dependence arises from inflationary particle production and is therefore unlikely to endanger the preservation of super horizon correlations as a record of inflation (C) 2010 Published by Elsevier B V